Electrical connecter



March 9 1926.

W. ILE

ELECTRICAL CONNECTER Filed August 18, 1925 2 Sheets-Sheet 1 lrl.

shawl doc a ike away March 9 ,1926. 1,575,838

' W. [LE

ELECTRICAL CONNECTER Filed August 18, 1925 2 Sheets-Sheet 2 Patented Mar. 9, 1926.

UNITED STATES WILLIAM ILE, 0F JACKSON, MICHIGAN.

ELECTRICAL CONNECTER.

Application filed August 18, 1925. Serial No. 50,922.

To all whom it m a3 0012 cam Be it known that I, WILLIAM ILE, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented new and useful Improvements in Electrical Connecters, of which the following is a specification.

The invention relates to an electrical connecter.

The object of the present invention is to improve the construction of electrical connecters and to provide a simple, practical and efficient device of strong, durable and comparatively inexpensive construction comprising a base cap and intermediate sections of insulating material and adapted to dispense with the usual screws for connecting the sections and to enable the sections to be connected and interlocked by assembling the same and engaging the coacting contacts.

It is also an object of the invention to provide a vacuum cleaner connecter of this character in which the interlocked sections will be maintained in their interlocked relation through the engagement of the coacting electrical connections and in Which the interlocked sections will be released when the electrical contacts are disengaged from each other and the current interrupted.

It is also an object of the invention to provide a vacuum cleaner connecter in which a minimum amount of insulating material will be employed in the construction of the molded sections and in which a maximum amount of air space Wlll be afforded around the electrical connectlons for its insulating effect.

or sacrificing any of the advantages of the invention.

In the drawings:

Figure 1 is a side elevation of a vacuum cleaner connecter constructed in accordance with this invention;

Fig. 2 is a central vertical sectional view of the same Fig. 3 is a side elevation partly in section to illustrate the manner of interlocking the intermediate and cap sections and the retaining ofthe same in interlocked relation by the knife contacts;

Fig. 4 is aplan view of the intermediate cylindrical section;

Fig. 5 is a reverse plan view of the cap section;

Fig. 6 is a plan view of the cap section;

Fig. 7 is a reverse plan view of the base;

Fig. 8 is a plan view of the base;

Fig. 9 is a detail perspective view of one of the spring contacts;

Fig. 10 is a similar view of one of the quadrant shaped intermediate locking plates; and

Fig. 11 is a detail perspective view of one of the knife contacts.

In the accompanying drawings in which is illustrated the preferred embodiment of the'invention, the vacuum cleaner connecter comprises in its construction a base 1 having knife contacts 2 projecting upwardly into an intermediate section 3 and engaging spring contacts 4 of acap section 5 and maintaining the intermediate and cap sections against relative rotary movement and thereby retaining the spring contacts of the cap section in interlocked relation with quadrant shaped plates 6 secured to the intermediate section. The base 1 which is constructed ofsuitable insulated material is substantially cylindrical and is provided at opposite sides with recesses 7 and it has vertical openings 8 through which pass the knife contacts 2 and the said openings 8 are enlarged to form lower recesses 9 in the lower face of the base for the reception of flanges 10 of the knife contacts. The knife contacts are provided at their lower ends with integral flanges 10 arranged at right angles to the knife contacts and enlarged at their outer portions and provided with openings-therein forming eyes 11 for the reception of screws 12. The screws 12 engage suitable threaded openings in the base preferably formed by metallic bushings 13 molded in the base and suitably anchored therein. binding screws and attaching screws and are adapted for securing the knife contacts 2 to the base and also attaching the terminals of wires to the contacts. The knife contacts 2 project above the base and are approximate- The screws 12 constitute combined ly oblong as clearly shown in Fig. 11 of the drawings and have oppositely beveled upper ends.

The intermediate cylindrical section which is also molded of suitable insulating material, consists of a cylindrical wall, a bottom wall and a transverse partition 13 arranged diametrically and dividing the hollow cylindrical section 3 into two separate spaces or compartments 16. The intermediate section is provided at the opposite ends of the partition 13 at opposite sides thereof with approximately quadrant bosses or enlargements it to which the quadrant shaped plates are secured. The quadrant shaped enlargements have their upper faces arranged below the plane of the upper edges of the cylindrical wall and partition and the plates 6 which are secured to the intermediate section by rivets 15 or other suitable fastening devices, have tlieir upper faces flush with the upper edges of the intermediate section and are provided at the compartments 16 with projecting hook shaped arms 17 which are adapted to interlock with recessed arms 18 of the spring contacts 4. The spring contacts 4 are each constructed of a single piece of phosphor bronze or other suitable conducting material which is bent intermediate of its ends and to one side of the center to form the sides 19 and 20 and the top connecting portion 21 of the spring contact. The side 20 is provided at the lower end with a return bend and is extended upwardly to form the arm or member 18 which is recessed at the top to form a substantially L-shaped lug 22, the lug 22 interlocks with the hook-shaped arm 17 of the quadrant shaped plate 6, whereby the spring contact and the quadrant shaped plate are securely interlocked for connecting the cap section and the intermediate section together without the use of the usual bolts or screws for this purpose. The spring contacts depend from the cap section and extend into the compartments or spaces 16 in the intermediate section at opposite sides of the partition 13 and in assembling the parts the cap section and the intermediate section are arranged together with the spring contacts extending into the compartments 16. The sections are then given an approximately quarter turn or rotation to carry the spring contacts into engagement with the quadrant shaped plates 6. When the parts are rotated in this manner, the recess 23 of the side member 18 of the spring contactis carried into engagement with the hook-shaped arm 17. The hook-shaped or L-shaped arm is thus engaged with the hook-shaped or L shaped lug 22 and after the spring and the plate have been interlocked in this manner, the knife contacts are passed through slots 24in the bottom wall of the intermediate section and are inserted between the sides 19 and 20 of the spring contacts into electrical engagement therewith. The knife "contacts being flat and of substantial width and the sides 19 and 20 of the spring contacts being of similar form, it will be seen that the top or cap section will be held against relative rotary movement and passing of the knife contacts 2 through the slots 2st which conform to the configuration of the said contacts 2, the base and the intermediate section will lie held against relative rotary movement. It will thus be seen that it will be impossible for the intermediate and cap sections to become disengaged from each other without first withdrawing the knife contacts and then partially rotating the cap and intern'iediate sections in a reverse direction from that which carried the spring contacts into interlocking relation with the hook plates 6 of the intermediate section. The connecting portions 21 of the spring contacts are riveted to substantially arcuate plates 25 secured in a recess 26 in the lower face of the cap section by means of screws 27 and provided with binding screws 28 for the attachment of terminals of the wires. openings 28 in the cap and have their heads arranged in enlarged portions of the said openings. The lower ends of the screws engage threaded apertures 29 in the curved plates to which the spring contacts are riveted. The cap section is provided with a central opening 30 for the passage of the wires.

What is claimed is:

The screws 27 extend through 1. An electrical connecter of the class described comprising a cap section, an intermediate section and a base section of molded insulating material, spring contacts carried by the cap section and extending into the intermediate section, means mounted on the intermediate section and engaging with the spring contacts to interlock with the same and knife contacts mounted on the base section and extending into the intermediate section and detachably engaging the spring contacts for maintaining the latter in their interlocked relation.

2. An electrical connecter of the class described including a base, an intermediate section and a cap section, contacts carried by the cap section and extending into the intermediate section, means carried by the intermediate section and engaging with the said contacts to interlock the cap, and intermediate sections and knife contacts mounted on the base and extending into the intermediate section and engaging the same and the contacts of the cap section to maintain the said parts in interlocked relation.

3. An electrical connecter of the class described including a base, a hollow intermediate section arranged upon the base, a cap section, contacts carried by the cap section I and the base and extending into the internewness mediate section and engaging each other,

and cooperating interlocking means carried by the cap section and the intermediate sec tion and maintained in interlocked relation by the contacts of the base when the same are in engagement with the contacts of the cap section. a

a. An electrical connecter of the class described including a base, a hollow intermediate section arranged upon the base, a "cap section, contacts carriedin the cap section and the base and extending into the intermediate section and engaging each other, and coopcrating interlocking means carried by the cap intermediate sections and arranged to be carried into and out of interlocking relation by a partial relative rotary movement of the said sections and retained in interlocked relation by the contacts of the base when the same are in engagement with the contacts of the cap section.

5. An electrical connecter of the class described including a substantially cylindrical base, a hollow cylindrical intermediate. section having a diametrically disposed parti: tion forming opposite compartments, fixed interlocking means mounted on the,intcrmediate section at the opposite ends of the compartments, a cap section provided'with contacts extending into the said compartments and having means for en aging the said interlocking means by a partial relative rotary movement of the sections, and con.- tacts mounted on the base and extending into the intermediate section. and engaging the contacts of the cap and retaining the said,

parts in interlocked relation while in engagement with the said contacts of the cap.

6. An electrical connecter of the class described, including a base, a hollow intermedi ate section arranged upon the base and provided at the bottom with slots, a cap section fitted on the intermediate s'ection' and pro-,

vided with depending spring contacts extending into the intermediate sect on, interlocking plates fixed to the intermediate sec.-

tion and arranged to becarried'into interlocking relation with the spring contacts by a relative rotary movement of the sald sectio s, and knife contacts mounted .on the base and extending through the slots of the intermediate section and engaging the spring contacts and holding the cap and intermediate. sections against relative rotary' move ment. I

7. An electrical connecter of the class described, including a base, a hollow intermediate section, a cap fitted on the intermediate section and provided with depending spring contacts having side members provided with approximately L-shaped lugs, horizontal plates fixed into the intermediate section and provided with approximately L-sh'ap'ed lugs arranged to be carried into enga ement with the lugs of the spring contacts y a partial rotary movement of the sections, and knife contacts mounted on the base and extending into the intermediate section and engaging the same andthespring contacts and holding the said sections against relative rotary movement while in such engagement.

8. An electrical connector of the class deate section, a capsection arranged upon the intermediate section, plates secured to the lower face of the cap section and having binding screws, depending spring contacts secured to the said plates and extending into the intermediate section and provided with upwardly extending side vmembers having approximately L-shapedlugs at their upper ends, horizontal plates secured to *the inter mediate section at opposite sides thereof and provided with substantially L-shaped lugs to engage with the lugs of the contact springs and adapted to be carried into and out of engagement by a partial relative rotary scribed, including a base, a hollow interme'dimovement f the sections, and blade contacts I recessed arms, horizontal plates secured to the intermediate section and having rojectmg recessed portions arranged to e carr1ed into and out of engagement wlth the recessed arms of the-spring contacts by a relative rotary movement of the sections, and knife contacts extending through the openings -in the base and engaging the spring contacts and holding the sections against relative rotary movement, said, knife contacts being provided at their lower ends with flanges having eyes and secured in the lower recesses of the base. I c In testimony whereof Ihave hereunto set my hand.

WILLI M ILE. 

